Channel-strip material and method of making the same



July 29, 1930.

G. L. MATTHLAS CHANNEL STRIP MATERIAL ANDMETHOD OF MAKING 'THE SAMEFiled Jan. 13, 1927 atented July 9 1930 i I PATENT OFFICE GILBERT Id.IVIATTHIAS OF CUYAHOGA'FALLS, OHIO, ASSIGNOR TO THE .B. F. GOODRICHCOMPANY, or NEW YORK, N. Y.,

A CORPORATION OF NEW YORK GHANNEL STRIJP MATERIAL AND METHOD OF MAKINGTHE SAME Application filed January 13, 1927. Serial No. 161,009.

This invention relates to channel strip material such as is used forcushioning the window glasses of automobiles.

Its chief objects are to provide foreconomy of manufacture; to provide achannel strip having highly resilient and, deformable cushioning membersadapted-snugly to embrace the glass and prevent rattling; to provide achannel strip adapted resiliently to engage the glass and yet to remainin an extended condition without anchoring of its ends and not buckleunder the frictional force of the glass; and to providethese advantagesin a-channel strip presenting to the glass a fibrous, anti-frictionsurface .Of the accompanying drawings: I

Fig. 1 is a perspective view of a piece of channel strip embodying. andmade in"accordance with the preferred form of my in- 2 ventiont Fig. 2is a perspective view of a piece of channel strip of modifiedconstruction.

-Fig. 3 is a perspect ve view of another modification.

Referring to the drawings, the channel strip shown in Fig. 1 comprises aflat base strip 10 upon which is secured a pair of cushioningleg-members of which each comprises a tubular core 11 of resilientrubber cause the legs to convergeslightly towardv 1 each other so as toembrace snugly a window glass of less thickness than the width of the.bottom of the channel and to contact the glass. at their outer edgesand thus to pro-. vide a snug fit and an efiective cushioning of theglass.

The fibrous covering 12 is preferably of anti-friction material such asfelt and the base member 10 is preferably of a stiff, fibrouscomposition such as rubber-impregnated fiber, rag stock or fiber board.

The anchoring of the leg members to the base member 10 at their innercorners by the stitching 13 holds them against the spread- -ing force ofthe glass received between the two legs, and the hollow form of the coremembers 11 permits the legs resiliently to yield to accommodate theglass while snugly embracing the latter with a moderate pressure. Thehol1ow"form ofthe cores also provides legs of desired cross-section witha comparatively small amount of rubber.

In the modification shown in Fig. 2 substantially the same effects aresecured by substituting sponge-rubber core members 14:, 14: for thehollow core members 11 of Fig. 1.

InFig. 3 the rubber core members, 15, 15, I

are tubular and of round cross-section, providing a channel havingrounded inner walls so that the legs will snugly embrace a window glassof less thickness than the width of the bottom of the channel and thusprovide a snug fit for Window glasses of varying thick:

ness, the round form of the cores providing awide range of deformabilitywithout such opening out of the channel legs as to cause them to standaway from the glass throughout their height.

In all of these embodiments the core members, 11, 14 or 15, arepreferably formed and vulcanized before their incorporation in thechannel strip and the base member 10, when it comprises rubber, ispreferably vulcanized before its incorporation in the strip. The

several elements of the complete strip, each of simple character andinexpensive to manufacture, are readily assembled and securedin'position by the stitching 13, and thus a laterally resilient,non-stretching and nonbuckling channel strip, having an anti-frie 'tionfibrous surface, is produced. The employment of the tubular rubberor thesponge rubber core members provides a-high degree of cushioning and alsopermits temporary deformation of the core members to facilitate thestitching operation without resulting looseness of the coverings orweakening of the grip of the channel legs upon the glass,

the hollowed, vulcanized, rubber strips, whether of the tubular form orof the sponge; rubber form, having a wide range of resilientdeformability.

Further modifications are possible Within the scope of my invention asdefined in the appended claim.

I claim:

A channel strip comprising a base, legs comprising sponge-rubberextending from said base, and fibrous cover material on said egs. p Inwitness'wherof I have hereunto set my hand this 8th day of January,1921.

GILBERT L; MATTHIAS

